# prezto docker container

This branch contains a Dockerfile and a Makefile that hopefully may
prove helpful for prezto development.

The idea is to have a totally independendn and isolated environemnet
in which to quickly make changes to either prezto-core or any plugin
that may bein development, enabling automated testing and even
continuous integration.

[![asciicast](https://asciinema.org/a/277054.svg)](https://asciinema.org/a/277054)

The container is a basic install of alpine linux, so the image
download is reasonably small

On the container we have a few utilities and additionalsoftware that
prezto has core support for

you can  check it out in a snap by doing:

docker pull hlecuanda/prezto-dev:latest

once you have the image, create a container from it with:

docker run -it --rm -h prezto hlecuanda/prezto-dev:latest

that will set you on a prompt withing the container with a
vanilla install of prezto.

a development and testing run can be achieved by mounting the stuff
you're working on to the image's filesystem:

docker run -it --rm -h prezto \
        -v /local/path:/home/prezto \
        -v /local/path/zdotdir:/home/preztoa \
        -v /local/module-dev-src:/home/prezto/.zprezto/modules/yourmodulea \
        hlecuanda/prezto-dev:latest

the third volume mapping is particularly interesting. you can
develop on your own machine and environnmen, and when spinning up the
container, your actual source is already in-plase asif installed on a
vanilla prezto install.

keep in mind that the container are ephemeral, unless you remove the
--rm option which will create new containers each time you run the
command, but the changes to the filesystemwill persist on a container
file that you can later spin up again to re use.

I have found epehermeral containers to be most useful since you get an
untainted, pristine environment for testing every time you spin up the
container.